"Assuming the ads were indeed commissioned by Cupertino-based Apple, they'd corroborate a series of forward looking hardware reports first published by [us] over the past several months," wrote AppleInsider's Kasper Jade. "These include expectations of thinner iMacs, redesigned polycarbonate MacBooks with thinner, sleeker enclosures, and speed-bumped Mac minis."

According to Jade, the projected October (7-9) lineup is likely to be accompanied by a redesign of Apple's Mighty Mouse, remote and aluminum wireless keyboards.

He added that Apple has already informed its direct and indirect sales channels of supply "constraints" for MacBooks, iMacs, and Mac Minis.

"Many of the company's resellers are also sold out of iMacs and Mac Minis and have been given restocking estimates of October 7th and 9th for those two products, respectively, suggesting a formal announcement regarding these Mac hardware refreshes could come as early as this Tuesday."